Round Bar

Round Bars

At Diya Steelloy, we offer a comprehensive range of premium-quality bars designed to cater to diverse industrial needs. Our product portfolio includes Round Bars, Square Bars, Hex Bars, Rectangular Bars, Flat Bars, Forged Bars, and Hollow Bars, manufactured from high-grade carbon steel, stainless steel, alloy steel, and other specialized alloys. These bars are widely utilized in construction, machinery, oil & gas, automotive, shipbuilding, aerospace, and tooling applications. Known for their superior strength, surface finish, dimensional accuracy, and excellent machinability, our bars are ideal for both structural and precision-engineered applications, ensuring reliable performance under demanding conditions.

Dimensional Table for Bars

Bar Type Size Range Length Tolerance Surface Finish
Round Bar 5 mm to 600 mm Dia 1000 mm to 6000 mm (or custom) H9, H11, H13 (as per requirement) Bright, Black, Peeled, Polished
Square Bar 10 mm to 200 mm 1000 mm to 6000 mm ±0.5 mm (or as specified) Hot Rolled, Cold Drawn, Polished
Hex Bar 10 mm to 100 mm (Across Flats) 1000 mm to 6000 mm ±0.3 mm Cold Drawn, Centerless Ground
Rectangular Bar 20 mm × 5 mm to 200 mm × 100 mm 1000 mm to 6000 mm ±0.5 mm Hot Rolled, Pickled, Polished
Flat Bar 12 mm × 3 mm to 300 mm × 50 mm 1000 mm to 6000 mm ±0.3 mm Mill Finish, Polished
Forged Bar 75 mm to 1000 mm Dia Up to 12000 mm As per ASTM / EN standards Rough Turned, Proof Machined
Hollow Bar OD 25 mm to 500 mm / WT 2 mm to 50 mm 1000 mm to 6000 mm ±0.5 mm (custom tolerances available) Hot Rolled, Annealed, Machined

Types of Bars

Round Bars

Round bars are versatile solid metal rods with a circular cross-section, widely used across engineering, construction, fabrication, and manufacturing sectors. These bars are available in various grades of stainless steel, carbon steel, alloy steel, and other specialized materials. Known for their excellent strength, machinability, and surface finish, round bars are suitable for both structural and precision applications. Common uses include shafts, fasteners, machine parts, automotive components, and construction reinforcements.

Round Bars
Key Features:-

  • Available in a variety of grades including stainless steel, carbon steel, and alloy steel.

  • High dimensional accuracy with excellent surface finish.

  • Good machinability, weldability, and formability.

  • Widely used in machining, automotive, construction, and general engineering applications.

  • Offered in various finishes including hot rolled, cold drawn, and polished.



Square Bars

Square bars are solid metal bars with a square cross-section, widely used for structural applications, fabrication, and manufacturing purposes. These bars offer superior strength, rigidity, and resistance to deformation, making them ideal for load-bearing frameworks, construction reinforcements, and precision components. Available in stainless steel, carbon steel, alloy steel, and other materials, square bars are suitable for machining, welding, and forming operations across various industries including construction, railways, shipbuilding, and heavy equipment manufacturing.

Square Bars
Key Features:-

  • Uniform square cross-section with precise dimensions and straightness.

  • Excellent strength and load-bearing capabilities.

  • Available in stainless steel, carbon steel, alloy steel, and other materials.

  • Ideal for fabrication, machining, construction, and manufacturing applications.

  • Offered in hot rolled, cold drawn, or polished finish as per requirements.



Hex Bars

Hex bars, or hexagonal bars, feature a six-sided cross-section and are widely used in precision machining, fastener manufacturing, and structural applications. Their geometric shape provides enhanced grip, torque transmission, and ease of machining, making them ideal for bolts, nuts, valves, shafts, and specialized components. Available in stainless steel, carbon steel, alloy steel, and other materials, hex bars deliver excellent corrosion resistance, mechanical strength, and dimensional stability across industries such as aerospace, automotive, marine, and construction.

Hex Bars
Key Features:-

  • Six-sided profile provides excellent grip and ease of wrenching in fastening applications.

  • High machinability makes it suitable for precision components and turned parts.

  • Available in various grades of stainless steel, alloy steel, and carbon steel.

  • Widely used in automotive, marine, aerospace, and industrial manufacturing.

  • Supplied in cold drawn, hot rolled, or polished finishes as per client requirements.



Rectangular Bars

Rectangular bars are solid metal bars with a flat, rectangular cross-section, offering a high strength-to-weight ratio and excellent dimensional accuracy. These bars are commonly used in structural frameworks, bracing systems, supports, and base plates across construction, fabrication, engineering, and heavy machinery industries. Made from stainless steel, carbon steel, and alloy steel, rectangular bars provide exceptional mechanical properties, corrosion resistance, and versatility for both indoor and outdoor applications.

Rectangular Bars
Key Features:-

  • Flat, rectangular cross-section ideal for structural and load-bearing applications.

  • Excellent machinability and weldability for fabrication and assembly work.

  • Available in various grades including stainless steel, carbon steel, and alloy steel.

  • Used in construction, infrastructure, shipbuilding, and general engineering.

  • Supplied in hot rolled, cold drawn, or polished finish as per specification.



Flat Bars

Flat bars are rectangular-shaped metal sections with a uniform thickness and width, widely used in fabrication, construction, and manufacturing. Known for their simplicity and versatility, flat bars are ideal for applications such as brackets, frames, supports, base plates, and ornamental work. Available in a variety of materials like stainless steel, carbon steel, and alloy steel, these bars offer superior strength, durability, and corrosion resistance, making them suitable for both structural and decorative purposes.

Flat Bars
Key Features:-

  • Simple flat rectangular profile suitable for a wide range of applications.

  • Highly versatile and easy to fabricate, cut, and weld.

  • Available in multiple grades and finishes including hot rolled and cold drawn.

  • Commonly used in industrial fabrication, structural supports, and architectural designs.

  • Excellent strength and corrosion resistance depending on material grade.



Forged Bars

Forged bars are produced through the forging process, where metal is compressed and shaped using localized compressive forces to improve its internal grain structure and mechanical properties. These bars offer exceptional strength, toughness, and resistance to fatigue, making them suitable for high-stress applications in industries such as aerospace, oil & gas, marine, power generation, and heavy engineering. Available in round, square, or custom shapes, forged bars are manufactured in carbon steel, stainless steel, alloy steel, and nickel alloys.

Forged Bars
Key Features:-

  • Manufactured through forging for enhanced mechanical strength and grain structure.

  • Excellent impact resistance, fatigue strength, and toughness.

  • Ideal for critical applications in aerospace, oil & gas, power, and marine sectors.

  • Offered in various shapes and grades including stainless steel, carbon steel, and alloys.

  • Custom sizes and heat-treated conditions available on request.



Hollow Bars

Hollow bars are cylindrical metal components with a hollow cross-section, designed to provide high strength with reduced weight. They are commonly used in machining applications to produce bushings, couplings, cylinders, and other mechanical components without the need for extensive drilling. Manufactured from stainless steel, carbon steel, alloy steel, and nickel alloys, hollow bars offer excellent machinability, corrosion resistance, and dimensional precision. These bars are ideal for industries such as general engineering, hydraulics, mining, automotive, and oil & gas.

Hollow Bars
Key Features:-

  • Reduces material waste and machining time for turned parts.

  • High dimensional accuracy and excellent surface finish for machining.

  • Available in a wide range of sizes, materials, and wall thicknesses.

  • Ideal for use in hydraulic cylinders, bushings, and general engineering parts.

  • Offered in stainless steel, carbon steel, alloy steel, and other custom grades.



Applications of Bars


  • Widely used in construction and infrastructure for reinforcement, support structures, and frameworks.

  • Extensively used in the manufacturing of fasteners, tools, shafts, gears, and automotive components.

  • Applied in shipbuilding and offshore industries for structural integrity and corrosion resistance.

  • Used in oil & gas, petrochemical, and power generation for flanges, valves, and fittings production.

  • Commonly used in general engineering and fabrication works requiring strength and machinability.

  • Preferred in the aerospace and defense sectors for components that demand precision and performance under stress.

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